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Apache Airflow Error:
AirflowNotFoundException

What does this error mean?

Raised when the requested object or resource is not available in the system. This exception appears in Airflow task logs when the condition is triggered during DAG execution.

Common causes

  • 1The requested DAG, task, or resource does not exist in the Airflow metadata database.
  • 2The dag_id or task_id referenced in the API call is incorrect or the DAG has not been parsed yet.

How to fix it

  1. 1Verify the dag_id and task_id are correct and the DAG has been parsed by the scheduler.
  2. 2Check the Airflow UI to confirm the DAG exists and is not in a paused or error state.

Frequently asked questions

Where does AirflowNotFoundException appear in Airflow?

In the task instance log, accessible via the Airflow UI under the failed task's Log tab, or in your log aggregation system.

Does this exception trigger a DAG retry?

Yes, if the task has retries configured. Each retry attempt creates a new task instance log entry.

Source · airflow.apache.org/docs/apache-airflow/stable/_api/airflow/exceptions/index.html

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